Evaluation of Interface Shear Strength Coefficient of Alternative Geogrid Made from Para Rubber Sheet

Anubud Liangsunthonsit; Pakkapon Jaroonrat; Jiratchaya Ayawanna; Weerawut Naebpetch; Salisa Chaiyaput

doi:10.3390/polym15071707

Evaluation of Interface Shear Strength Coefficient of Alternative Geogrid Made from Para Rubber Sheet

Polymers (Basel). 2023 Mar 29;15(7):1707. doi: 10.3390/polym15071707.

Authors

Anubud Liangsunthonsit¹, Pakkapon Jaroonrat¹, Jiratchaya Ayawanna², Weerawut Naebpetch³, Salisa Chaiyaput¹

Affiliations

¹ Department of Civil Engineering, School of Engineering, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand.
² School of Ceramic Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand.
³ Center of Rubber Technology for Community, Faculty of Engineering, Thaksin University, Phatthalung 93110, Thailand.

Abstract

In this work, elastic natural rubber compound sheet (RCS) and ribbed smoked sheet grade 3 (RSS) were studied as alternative replacements for polymer geogrid for soil reinforcement. In order to investigate the reinforcing effectiveness in three distinct environments using the interface shear strength coefficient (R_in) by the large-scale direct shear test, the RSS and RCS geogrids were installed independently in sand, lateritic soil, and clay. Using either an RSS geogrid or RCS geogrid, the average R_in is progressively smaller in reinforced sand, lateritic soil, and clay, respectively. Higher tensile strength of reinforced materials using the RCS geogrid than those using the RSS geogrid is encouraged by the better elastic characteristics of the RCS geogrid. Thus, utilizing the RCS geogrid-reinforced materials can better increase the shear strength of coarse-grained soil such as sand and gravel.

Keywords: RSS; geogrid; interface shear strength; para rubber; polymer; rubber compound.

Abstract

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